TY - JOUR
T1 - Lipid accumulation potential of oleaginous yeasts
T2 - A comparative evaluation using food waste leachate as a substrate
AU - Davidraj, Johnravindar
AU - Karthikeyan, Obulisamy Parthiba
AU - Selvam, Ammaiyappan
AU - Murugesan, Kumarasamy
AU - Wong, Jonathan W.C.
N1 - Funding information:
The authors would like to thank the Research Grant Council, Hong Kong Special Administrative Region for the funding support provided under Collaborative Research Fund (CRF; Grant No: C6033-14G).
Publisher copyright:
© 2017 Elsevier Ltd.
PY - 2018/1
Y1 - 2018/1
N2 - In present study, the efficiency of three oleaginous yeasts i.e., Yarrowia lipolytica, Rhodotorula glutinis and Cryptococcus curvatus were compared for their lipid assimilation capacities using three different FW-leachates as a medium. The FW-leachates were collected from dry anaerobic digesters and diluted to achieve carbohydrate content of 25 g L−1 prior to yeast inoculations. Around 5% of yeast cultures were individually mixed in three different FW-leachate mediums and incubated under 30 °C and 150 rpm agitation for 6 days. The Y. lipolytica produced high biomass with lipid contents of 49.0 ± 2% on dry weight basis. Whereas, the acetic acid concentration of >6 g L−1 inhibited the growth of R. glutinis. The study observed that the selection of appropriate FW-leachate composition is highly important for biolipid accumulation by oleaginous yeasts.
AB - In present study, the efficiency of three oleaginous yeasts i.e., Yarrowia lipolytica, Rhodotorula glutinis and Cryptococcus curvatus were compared for their lipid assimilation capacities using three different FW-leachates as a medium. The FW-leachates were collected from dry anaerobic digesters and diluted to achieve carbohydrate content of 25 g L−1 prior to yeast inoculations. Around 5% of yeast cultures were individually mixed in three different FW-leachate mediums and incubated under 30 °C and 150 rpm agitation for 6 days. The Y. lipolytica produced high biomass with lipid contents of 49.0 ± 2% on dry weight basis. Whereas, the acetic acid concentration of >6 g L−1 inhibited the growth of R. glutinis. The study observed that the selection of appropriate FW-leachate composition is highly important for biolipid accumulation by oleaginous yeasts.
KW - Biolipids
KW - Food waste
KW - Oleaginous yeast
KW - Pre-treatment
KW - Volatile fatty acids
UR - http://www.scopus.com/inward/record.url?scp=85025147407&partnerID=8YFLogxK
U2 - 10.1016/j.biortech.2017.06.151
DO - 10.1016/j.biortech.2017.06.151
M3 - Journal article
C2 - 28736146
AN - SCOPUS:85025147407
SN - 0960-8524
VL - 248
SP - 221
EP - 228
JO - Bioresource Technology
JF - Bioresource Technology
ER -
